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Solubilization Mechanism of Hydrocarbon Oils by Polymeric Nonionic Surfactant Solution  

Bae, Min Jung (Department of Chemical and Biochemical Engineering, Dongguk University)
Lim, Jong Choo (Department of Chemical and Biochemical Engineering, Dongguk University)
Publication Information
Korean Chemical Engineering Research / v.47, no.1, 2009 , pp. 24-30 More about this Journal
Abstract
In this study, solubilization experiments of n-decane, n-undecane and n-dodecane oil were performed by micellar solutions of polymeric nonionic surfactant Pluronic L64($EO_{13}PO_{30}EO_{13}$) at room temperature. A single spherical drop of hydrocarbon oil was injected into aqueous surfactant solution using an oil drop contacting technique and solubilization rate of hydrocarbon oil was measured by observing the size of oil drop with time. It was shown that solubilization rate decreased with the alkane carbon number(ACN) of the hydrocarbon oil. The solubilization rate was also found to be independent of initial oil dorp size and almost linearly proportional to the initial surfactant concentration. These results revealed that solubilization of n-decane, n-undecane and n-dodecane oils by L64 micellar solution is controlled by interface-controlled mechanism but not by diffusion-controlled mechanism. The equilibrium solubilization capacity(ESC) was measured by a turbidimeter and the result showed that EAC decreased with an increase in ACN but increased with both increases in surfactant concentration and solubilization rate. Dynamic interfacial tension measurements showed that interfacial tension and equilibrium time increased with an increase in ACN of hydrocarbon oil but decreased with an increase in surfactant concentration.
Keywords
Polymeric Nonionic Surfactant; Micelle; Hydrocarbon Oil; Solubilization Rate; Equilibrium Solubilization Capacity;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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